bootstrapping does not work properly using multiple key space
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Key: CASSANDRA-673
URL: https://issues.apache.org/jira/browse/CASSANDRA-673
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.5
Environment: 1. cluster has at least one empty key-space
2. one node be added into cluster to do bootstrap
Reporter: Michael Lee
Fix For: 0.9
when use multiple key-spaces, and one key-space has no SSTable, then bootstrap
may not work right.
Say nodes A, B, C, D have key spaces "KS1" and "KS2", KS1 is empty, now add
empty node E into cluster.
Suppose E decide to drag data from A and B(bootstrap source), E will send range
to A and B, and A, B will scan all key-spaces they got and send ack to E, which
contains list of key-space name(StreamContextManager.StreamContext),
when E get ack from A and B, it scan this list, but when encounter first empty
key-space, it will stop and remove node from bootstrap sources list:
StreamInitiateVerbHandler.doVerb:
......
if (streamContexts.length == 0 &&
StorageService.instance().isBootstrapMode())
{
if (logger.isDebugEnabled())
logger.debug("no data needed from " +
message.getFrom());
StorageService.instance().removeBootstrapSource(message.getFrom());
return;
}
......
If list of bootstrap sources is empty, E will finish bootstrapping
So, the result is: E get nothing from source A, B, even KS2 has lots of data.
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